This series of constant pressure water supply equipment for daily life adopts advanced microcomputer control technology, combined with high-performance frequency converters, to automatically adjust the speed of the water pump or increase or decrease the number of running water pumps according to the amount of daily water consumption, achieving constant pressure water supply. This series of equipment has stable and reliable pressure, high efficiency and energy saving, and is an ideal water supply equipment for residential areas, water plants, industrial and mining enterprises, etc. To avoid low-frequency dead zone operation of the inverter during sleep time, a small energy storage tank is specially designed to make the equipment more complete and reasonable.